Improvement in drop-lights



J. BROWN. Drop-Light.

Patented Dec.1'lv',1878.

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ZZ/T/VESSES. 0.9.? "/1 N'PETERS, Paoroumoammsa. WASHINGTON. D Q

JAMES BROXVN, OF BROOKLYN, NEW YORK, ASSIGNORT'O V. C. VGSBURGH & (30.,OF SAME PLACE.

IMPROVEMENT lN DROP-LIGHTS.

Specification forming part of Letters Patent No. 210,912, dated December17, 1878; application filed December 4,1878.

To all whom it may concern:

Be it known that 1, JAMES BROWN, ofBrooklyn, Kings county, New York,have invented, made, and applied to use Improvements in the Constructionof Extension Chandeliers or Drop-Lights and that the following is afull, clear, and correct description of my invention, reference beinghad tothe accompanying drawings, making part of this specification, andto the letters of reference marked thereon, in whi ch-- Figure 1 is avertical sect-ion of my improvement, the extension-tube being shown up.Fig. 2 is a cross-section of Fig. 3 at the line :0 m. Fig. 3 is avertical section of my improvement, the extension'tube being shown down.

In the drawings like parts of the invention are designated by the sameletters of reference.

The nature of the present invention relates to improvements, as morefully hereinafter set forth, in the construction ofextension-chandeliers; the object of the invention being the provisionof proper mechanical devices to allow the extension-tube to thechandelier to be easily drawn down and pushed back or restored to itsoriginal position, and to hold the extension-tube at any desired heightor position.

To. enable those skilled in the arts to make and use my invention, 1will describe its construction and operation.

B is the extension-tube, made preferably square, and which may beprovided at its lower end with a gas-burner. C shows a circular box,placed over the tube B, and through which it is passed. The lowerportion of the box G is made separate from its upper portion, and can beeasily removed from the same by unscrewing the screws 0, and thus giveaccess to the interior of the upper port-ion of the box when desired.

Upon the interior of the upper portion of the box 0 are secured, in linewith each other and opposite each other, the rear ends of the helicalsprings D, the forward or front ends of which are attached to the rearends of the binding or retaining plates E. E shows the binding orretaining plates for holding the extension-tube B in the desiredposition. They are provided with the segmental lugs 0 upon each side,which extensions of the plates E extend over the tube 13, and serve toguide and keep the same in a vertical position (so to speak) when drawndown or pushed up. The faces of the plates E, which are intended to havetheir bearing upon the sides of the tube B, are covered with leather,Chamois, or some like material, so that the tube B, when drawn down orpushed up, shall not be injured or defaced.

Such being the construction, the operation may be thus described: Whenthe tube B is drawn down, the friction between the sides of the tube Band the faces of the plates E causes the plates E- to be drawn into aright line with each other, at which point they exert their full bearingor binding power, and thus to hold the tube B securely in the desiredposition or at the proper height, the springs D re-enforcing the platesat this point, and from time to time compensating for the wear upon thesame.

When the tube B is pushed up or restored to its original position, byits movement the plates are thrown out of the right-line position. sothat they rock, as it were, upon the forward ends of the helicalsprings, and,to a great extent, being removed from contact with thesides of the tube, and for the greater portion of their length beingreleased from contact with the same, as shown in Fig. l, the tube B iseasily pushed up.

Having now set forth my invention, what I claim as new is- In anextension-chandelier, the combination of the following elements: a tube,B, circular box 0, helical springs D, and retainingplates E, providedwith the segmental lugs e, constructed and operating substantially asand for the purposes set forth.

I JAMES BBOWN.

In presence of- A. SIDNEY DUANE, EDWARD S. PEGK.

